<template>
      <header class="header">
            <!-- 头部的第一行 -->
            <div class="top">
                <div class="container">
                    <div class="loginList">
                        <p>尚品汇欢迎您！</p>
                        <!-- 没有用户名：未登录 -->
                        <p v-if="!userName">
                            <span>请</span>
                            <!-- 声明式导航：router-link务必要有to属性 -->
                            <router-link to="/login">登录</router-link>
                            <router-link class="register" to="/register">免费注册</router-link>
                        </p>
                        <!-- 登录了 -->
                        <p v-else>
                                <a>{{userName}}</a>
                                <a class="register" @click="logout">退出登录</a>
                        </p>
                    </div>
                    <div class="typeList">
                        <router-link to="/center/myOrder">我的订单</router-link>
                        <router-link to="/shopCart">我的购物车</router-link>
                        <a href="###">我的尚品汇</a>
                        <a href="###">尚品汇会员</a>
                        <a href="###">企业采购</a>
                        <a href="###">关注尚品汇</a>
                        <a href="###">合作招商</a>
                        <a href="###">商家后台</a>
                    </div>
                </div>
            </div>
            <!--头部第二行 搜索区域-->
            <div class="bottom">
                <h1 class="logoArea">
                    <router-link  class="logo" to="/home" title="尚品汇">
                        <img src="../../static/images/header/logo.png" alt="">
                    </router-link>
                </h1>
                <div class="searchArea">
                    <form action="###" class="searchForm">
                        <input type="text" id="autocomplete" class="input-error input-xxlarge" v-model="keyword" />
                        <button class="sui-btn btn-xlarge btn-danger" type="button" @click="goSearch">
                            搜索
                        </button>
                    </form>
                </div>
            </div>
        </header>
</template>

<script>
export default {
  name:'Header',
  data(){
     return {
       keyword:''  
     }
  },
  methods:{
    goSearch(){ 
        // this.$router.push({name:'Search'}) 
        // this.$router.push({
        //     name:'Search',
        //     // params:{ 
        //     //   // keyword:this.keyword
        //     //    keyword:"", 
        //     // },
        //     query:{
        //       k:this.keyword.toUpperCase()     
        //     }
        // }) 

        //如果有query参数也要带过去
        if(this.$route.query){
           let location = {
               name:"Search",
               params:{
                 keyword:this.keyword || undefined 
               }
           };
           location.query = this.$route.query;
           this.$router.push(location);
        }

    },
    mounted() {
    //通过全局事件总线清除关键字
    this.$bus.$on("clear", () => {
       this.keyword = "";
    });
   },
   //退出登录
   async logout(){
      //退出登录需要做的事情
      //1:需要发请求，通知服务器退出登录【清除一些数据：token】
      //2:清除项目当中的数据【userInfo、token】
        try {
          //如果退出成功
          await this.$store.dispatch('user/userLogout');
          //回到首页
          this.$router.push('/home');
        } catch (error) {
          
        }
    }
 },
 computed:{
    //用户名信息
    userName(){
       return this.$store.state.user.userInfo.name;
    }
  }
}
</script>

<style lang="less" scoped>
    .header {
    &>.top {
        background-color: #eaeaea;
        height: 30px;
        line-height: 30px;

        .container {
            width: 1200px;
            margin: 0 auto;
            overflow: hidden;

            .loginList {
                float: left;

                p {
                    float: left;
                    margin-right: 10px;

                    .register {
                        border-left: 1px solid #b3aeae;
                        padding: 0 5px;
                        margin-left: 5px;
                    } 
                }
            }

            .typeList {
                float: right;

                a {
                    padding: 0 10px;

                    &+a {
                        border-left: 1px solid #b3aeae;
                    }
                }

            }

        }
    }

    &>.bottom {
        width: 1200px;
        margin: 0 auto;
        overflow: hidden;

        .logoArea {
            float: left;

            .logo {
                img {
                    width: 175px;
                    margin: 25px 45px;
                }
            }
        }

        .searchArea {
            float: right;
            margin-top: 35px;

            .searchForm {
                overflow: hidden;

                input {
                    box-sizing: border-box;
                    width: 490px;
                    height: 32px;
                    padding: 0px 4px;
                    border: 2px solid #ea4a36;
                    float: left;

                    &:focus {
                        outline: none;
                    }
                }

                button {
                    height: 32px;
                    width: 68px;
                    background-color: #ea4a36;
                    border: none;
                    color: #fff;
                    float: left;
                    cursor: pointer;

                    &:focus {
                        outline: none;
                    }
                }
            }
        }
    }
}
</style>